Nominet, Britain’s internet domain name dispute resolution service, ruled that Mr Tyler had breached rules by using the brand to make money and ordered him to forfeit the domain name.

In her ruling, adjudicator Jane Seager said: “It is the very nature of a criticism website that discussion should be open and not influenced by commercial concerns.

“Thus, whilst the links to other airlines may be seen as genuine recommendations as part of an ongoing discussion about air travel, commercial links cannot.

“There is undoubtedly a link between the respondent's financial advantage and the respondent's use of the complainant's trade mark in the domain name. The respondent only earned money because of the traffic to the website, and such traffic must have been influenced by the domain name.

“It cannot be fair to take advantage of the reputation attached to another party’s trade mark in this manner, whether it be good or bad.”

However, Mrs Seager stressed that the profit was the only reason behind her decision and that critical content on the site did not constitute “unfair disruption” to Ryanair.

She added: “In a free and open society internet users should generally be able to post comments on their recent experiences or on current events, as long as such postings do not fall foul of the law.

“Any resulting disruption as a result of criticism appearing on a website (or in any other media for that matter) is merely something that businesses have to deal with on a daily basis.”

Despite the decision, Mr Tyler, from Walthamstow, London, has remained committed to his cause and moved the site to a new address.

An update posted on the site yesterday read: “Unfortunately, Lyingair won the dispute on a small technicality concerning £322 generated through affiliate deals.

“But never fear, we have already moved the site to it’s new home on www.ihateryanair.org and will continue to provide you with all the latest on how this pathetic excuse for an airline will attempt to extract cash from you through sneaky hidden charges, fly you to places that are not where you actually want to go and leave you stranded when the ---- hits the fan.”

It added: “We’re off to spend the £322 on booze to celebrate!”

Ryanair has faced fierce criticism in the past over its policy of advertising rock-bottom fares while inflating prices through a plethora of extra charges.

Its chief executive Michael O'Leary recently suggested that planes could fly with “standing-only” areas for passengers and has also raised the idea of charging passengers to use the aircraft lavatories.

Earlier this year, he introduced an extra baggage charge during the summer holiday season, which vastly increased the cost of checking in luggage for a journey.